Question

Divide 16x³+31.6x²-6.8x-12 by x+2​

Answer 1

Answer: = 16x²-.4x-6

Explanation:

divide 16x³+31.6x²-6.8x-12 by x+2​

Using synthetic division: Carry first 1 down. Multiply that by outside -2 and put it under 2nd number. Add. Then multiply and repeat until you get to end.

-2 | 16 31.6 -6.8 -12

| -32 .8 12

16 -.4 -6 0

Put back into equation form. Last number is 0 so remainder is 0

= 16x²-.4x-6

Answer 2

16x^2 - 1.6x - 5

------------------------

x+2 | 16x^3 + 31.6x^2 - 6.8x - 12

- (16x^3 + 32x^2)

------------------------

-0.4x^2 - 6.8x

+(-0.4x^2 - 0.8x)

-----------------

-6x - 12

+(-6x - 12)

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0